Space Launch Report:  Chang Zheng 11 Data Sheet
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cz11-1a.jpg (16443 bytes)Chang Zheng 11

Vehicle Configurations

Vehicle Components

Launch Log

 

CZ-11 Hangar Processing Before Canister Loading

China Debuts CZ-11


On September 25, 2015, China launched its first Chang Zheng (CZ) 11 - a four-stage solid fuel rocket - from Jiuquan Satellite Launch Center. CZ-11 boosted at least four small satellites into near-polar low earth orbit.

CZ-11 launched at 01:41 UTC from a canister attached to a mobile transporter/erector in a manner similar to that used by Russia's retired Start-1 launch vehicle, which was itself based on Russia's Topol ICBM. The new launch vehicle was developed as a quick-reaction orbital launcher by the China Academy of Launch Vehicle Technology (CALT). The rocket is reportedly 20.8 meters long (other reports suggest 18.7 meters), and 2 meters in diameter with a 58 tonne launch mass and a 120 tonne liftoff thrust. CZ-11 may be able to lift 700 kg to sun synchronous orbit.


cz11-1b.jpg (23897 bytes)CZ-11 Erected in Launch Canister at Jiquan

The test flight boosted three small “Tianwang-1 satellites and a fourth named Pujian 1 into roughly 480 km orbits at inclinations of 94.2 to 97.3 deg. One object, possibly a fourth stage with a liquid propulsion was tracked in an elliptical transfer type orbit.

CZ-11 may be based on the DF-31 series solid fuel ballistic missile already in China's inventory.  The canister used to launch CZ-11 was similar to launch canisters used by the road-mobile DF-31A. 

CZ-11 appears to differ substantially from another quick-response solid fuel orbital launch vehicle named "Kuaizhou" ("Quick Vessel") that China began flying in 2013, also from Jiuquan Satellite Launch Center.  The first CZ-11 may, however, have been launched from a mobile pad at Jiuquan, the second of two built northeast of the CZ-2F launch site, that also hosted the second Kuazhou launch in 2014.



cz11n.jpg (3358 bytes)Second CZ-11 Launch

China's four-stage solid fuel CZ-11 launched an X-ray pulsar navigation experimental satellite namved XPNAV 1, along with several microsatellites, into low earth orbit from Jiuquan Satellite Launch Center in northwest China on November 9, 2016. Liftoff from a canister attached to a mobile transporter/erector parked on a flat pad took place at 23:42 UTC. The site was likely one of two flat pads built in recent years northeast of the CZ-2F launch site.

XPNAV 1 (X-Ray Pulsar Navigation, or Maichong Xing Shiyan Weixing), a 240 kg satellite built by affiliates of China Aerospace Science and Technology Corporationk will test on-orbit satellite navigation by measuring periodic X-rays from pulsars. Up to four additional microsatellites, one of which may have remained attached to the CZ-11 fourth stage, also entered orbit.  The U.S. tracked objects from the launch in a 500 km circular orbit and in a 500 x 1,000 km orbit.

It was the second known CZ-11 flight, following an inaugural launch on September 25, 2015. The 58 tonne rocket may be based on China's DF-31 series solid fuel ballistic missile, because the canister used to launch CZ-11 is similar to launch canisters used by the road-mobile DF-31A. CZ-11 is reportedly 20.8 meters long (other reports suggest 18.7 meters), and 2 meters in diameter with a 58 tonne launch mass and a 120 tonne liftoff thrust. Its fourth stage has demonstrated in-space maneuvering capability.  CZ-11 may be able to lift 350 kg or more to sun synchronous orbit.

Vehicle Configurations

  LEO
Payload
(metric tons)
Earth Escape
Payload
(metric
tons)
Configuration LIftoff
Height
(meters)
Liftoff
Mass
(metric tons)
CZ-11 0.7 t (LEO/S)   Three solid stages + liquid storable propellant fourth stage 18.7 - 20.8 m 58 t
           

* GEO:  Geosynchronous Earth Orbit

Vehicle Components

  Stg 1 Stg 2 Stg 3 Stg 4 Payload
Fairing
Diameter (m) 2 m 2m 1.4 m 1.4 m 1.6 m
Length (m) ~9 m (incl I/S) ~3 m (incl I/S) ~1 m ~1 m ~5.7 m
Propellant Mass (tonnes)          
Empty Mass (tonnes)          
Total Mass (tonnes)          
Engine          
Engine Mfgr          
Fuel Solid Solid Solid Liquid  
Oxidizer       Liquid  
Thrust
(SL tons)
120 t        
Thrust
(Vac tons)
         
ISP (SL sec)          
ISP (Vac sec)          
Burn Time (sec)          
No. Engines 1 1 1    

CZ-11 Launch Log


                        CZ-11 ORBITAL SPACE LAUNCH LOG

DATE     VEHICLE           ID      PAYLOAD                 MASS(t) SITE*      ORBIT*
------------------------------------------------------------------------------------
09/25/15 CZ-11             CZ11-01 Multisats                       JQ         LEO/S
11/09/16 CZ-11             CZ11-02 XPNAV 1 + 4usats        0.27?   JQ         LEO/S
------------------------------------------------------------------------------------

 Site Code:

JQ = Jiuquan, China 

 Orbit Code:

EEO/M = Molynia (12-hr) Elliptical Earth Orbit
FTO = Failed to Orbit
FSO = Failed Suborbital
GTO = Geosynchronous Transfer Orbit
GTO+ = Supersynchronous or High Perigee Transfer Orbit
GTO- = Subsynchronous Transfer Orbit
GTOi = Inclined GTO
GEO = Geosynchronous Orbit
HCO = Heliocentric (solar) Orbit
HTO = High Earth Transfer Orbit
LEO = Low Earth Orbit
LEO/S = Sun Synchronous Low Earth Orbit
LEO/P = Polar Low Earth Orbit
MEO = Medium Earth Orbit
MTO = Medium Earth Transfer Orbit 
SUB = Suborbital
xxx

References

 Last Update: March 05, 2017

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